TCS Placement: Sample Questions 71 - 72 of 502

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Question 71

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Describe in Detail

Essay▾

What is NVT (Network Virtual Terminal) ?

Explanation

  • Set of rules defining a very simple virtual terminal interaction used at the start of a Telnet session.
  • The Network Virtual Terminal (NVT) represents basic terminal and provides standard that for connecting computers:
    • Defines how data and commands are sent across the network.
    • Allows interoperability of Telnet with heterogeneous computers.
    • Protocol has virtual keyboard and printer that displays specific characters.
      • Printer responds to incoming data
      • Keyboard produces outgoing data sent over the TELNET connection.
    • Provides bi-directional character device.
  • Based on seven-bit USASCII in an eight-bit field.
Given the Image is Define the Network Virtual Terminal (NVT)

Question 72

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Describe in Detail

Essay▾

What is point- to-point protocol?

Explanation

  • Point-to-point communications protocol connects computers to remote networking services including Internet service providers- most common type of WAN connection.
  • PPP connections connect LANs to service provider WANs, and connect LAN segments within an organization network.
  • A LAN-to-WAN point-to-point connection is also referred to as a serial connection or leased-line connection because the lines are leased from a carrier (usually a telephone company) and are dedicated for use by the company leasing the lines.
  • PPP can be used over twisted pair, fiber-optic lines, or satellite transmission.
  • PPP provides transport over ATM, Frame Relay, ISDN, and optical links.
Given the Image is Define the Point-To-Point Protocol

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